Sources close to the situation tell TMZ ... if Kevin ever felt any concern about Britney's state of mind, he would try to take legal steps to end -- or at least reduce -- her visitation with their boys, but he doesn't think she poses a risk.
Our sources say Kevin is confident their boys are healthy and safe when they're at their mom's home -- which is about 30 percent of the time -- and he's not the least bit influenced by the persistent buzz from some fans who claim Britney should be freed from her conservatorship. There are always other people at the home when the boys visit ... making Kevin feel that much more comfortable.
As we've reported ... some Britney fans think she's being held against her will, but we've been told there's no truth to this. Our sources say Kevin is not going to weigh in on Britney's state of mind, because he's not an expert and sees no benefit in sharing his opinion.
Bottom line ... Britney's going to keep seeing the boys with no resistance or concern from their father.